3120985 has 16 divisors (see below), whose sum is σ = 4467456. Its totient is φ = 2046528.

The previous prime is 3120977. The next prime is 3120989. The reversal of 3120985 is 5890213.

It is a cyclic number.

It is not a de Polignac number, because 3120985 - 2³ = 3120977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3120989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (279216).

Almost surely, 2^3120985 is an apocalyptic number.

3120985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3120985 is a deficient number, since it is larger than the sum of its proper divisors (1346471).

3120985 is a wasteful number, since it uses less digits than its factorization.

3120985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 3120985 is about 1766.6309744822. The cubic root of 3120985 is about 146.1382471099.

The spelling of 3120985 in words is "three million, one hundred twenty thousand, nine hundred eighty-five".